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The Fort du Saint-Eynard is an iconic site in the Chartreuse Mountains. Perched at an altitude of 1,333 m, it offers exceptional views over the Grenoble valley and the Belledonne and Vercors mountain ranges. A former 19th-century military fort, it is now accessible to hikers and is an ideal destination for a half-day or full-day outing, combining nature, heritage, and spectacular views. This hike can be done entirely by sustainable transport from Grenoble.
Useful information
Starting altitude : 930–1,000 m (depending on bus stop)
Summit altitude : 1,333 m
Elevation gain : ~400 m
Distance : 2 to 3 km for the climb from Col de Vence, plus depending on the starting point
Average duration : 1.5 to 2 hours one way
Difficulty : Medium
Markings : yellow (PR)
Itinerary
From Col de Vence, the trail climbs gradually through forests and meadows to the fort. The climb is steady but requires a little stamina, with an elevation gain of about 400 meters and a distance of 2 to 3 km depending on the exact starting point.
The path is well marked and secure. Hikers who wish to extend the outing can start from Grenoble city center or La Bastille, combining different trails for a longer and more challenging climb, offering continuous views of Grenoble even before reaching the fort.
At the top, Fort du Saint-Eynard is easily accessible and sometimes has a small restaurant or refreshment bar open in season, perfect for enjoying a bite to eat while taking in the view. The journey takes 4.5 hours depending on the route chosen.
Access by soft mobility
1. From Grenoble, take tram B to the La Tronche – Hôpital stop, then bus 62 towards Le Sappey-en-Chartreuse / Col de Vence.
2. Get off at the Col de Vence or Le Sappey-en-Chartreuse stop, depending on your chosen route.
3. The journey takes about 30 to 40 minutes, with a TAG ticket costing €2. The line runs every day, with several departures each day. Timetables are available at tag.fr.
4. Upon arrival, the trail starts directly from the bus stop, allowing you to begin the hike without a car.
Good to know
The hike can also be done by mountain bike or electric bike, especially to reach the Col de Vence before the final climb. Bring water and sun protection. The fort is often open to visitors on weekends and offers places to rest. The trails are rocky in places: good hiking shoes are recommended. In winter, watch out for snow and ice on the last few meters. Stay on the marked trails to protect the flora and avoid erosion.